Document Type and Number:
Japanese Patent JPH0532165
Kind Code:
B2
Abstract:
This miling tool for underground work consists of a tool body which has a plurality of cutter blades. Each cutter blade has a negative axial rake and an essentially constant negative radial rake. In addition, each cutter arm has a close packing of cylindrical cutting grade tungsten carbide inserts set at a lead angle of about 0 to 10 degrees. The inserts are also preferably vertically offset on adjacent cutting blades.
Inventors:
KAARU DEIIN REINORUZU
SAAMAN BIIMAA KAATAA JUNIA
SHEIN HOORU HAATO
SAAMAN BIIMAA KAATAA JUNIA
SHEIN HOORU HAATO
Application Number:
JP16554887A
Publication Date:
May 14, 1993
Filing Date:
July 03, 1987
Export Citation:
Assignee:
HOMUKO INTERN INC
International Classes:
B23C5/04; B23C5/10; E21B10/56; E21B29/00
Next Patent: JPH0532166